1 /*****************************************************************************
2 * mosaic.c : Mosaic video plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2004-2005 VideoLAN
7 * Authors: Antoine Cellerier <dionoea@via.ecp.fr>
8 * Christophe Massiot <massiot@via.ecp.fr>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
28 #include <stdlib.h> /* malloc(), free() */
36 # include <limits.h> /* INT_MAX */
39 #include "vlc_filter.h"
40 #include "vlc_image.h"
44 #define BLANK_DELAY I64C(1000000)
46 /*****************************************************************************
48 *****************************************************************************/
49 static int CreateFilter ( vlc_object_t * );
50 static void DestroyFilter ( vlc_object_t * );
52 static subpicture_t *Filter( filter_t *, mtime_t );
54 static int MosaicCallback( vlc_object_t *, char const *, vlc_value_t,
55 vlc_value_t, void * );
57 /*****************************************************************************
58 * filter_sys_t : filter descriptor
59 *****************************************************************************/
65 image_handler_t *p_image;
68 int i_position; /* mosaic positioning method */
69 vlc_bool_t b_ar; /* do we keep the aspect ratio ? */
70 vlc_bool_t b_keep; /* do we keep the original picture format ? */
71 int i_width, i_height; /* mosaic height and width */
72 int i_cols, i_rows; /* mosaic rows and cols */
73 int i_align; /* mosaic alignment in background video */
74 int i_xoffset, i_yoffset; /* top left corner offset */
75 int i_vborder, i_hborder; /* border width/height between miniatures */
76 int i_alpha; /* subfilter alpha blending */
78 char **ppsz_order; /* list of picture-id */
84 /*****************************************************************************
86 *****************************************************************************/
87 #define ALPHA_TEXT N_("Alpha blending")
88 #define ALPHA_LONGTEXT N_("Alpha blending (0 -> 255). Default is 255")
90 #define HEIGHT_TEXT N_("Height in pixels")
91 #define WIDTH_TEXT N_("Width in pixels")
92 #define XOFFSET_TEXT N_("Top left corner x coordinate")
93 #define YOFFSET_TEXT N_("Top left corner y coordinate")
94 #define VBORDER_TEXT N_("Vertical border width in pixels")
95 #define HBORDER_TEXT N_("Horizontal border width in pixels")
96 #define ALIGN_TEXT N_("Mosaic alignment")
98 #define POS_TEXT N_("Positioning method")
99 #define POS_LONGTEXT N_("Positioning method. auto : automatically choose " \
100 "the best number of rows and columns. fixed : use the user-defined " \
101 "number of rows and columns.")
102 #define ROWS_TEXT N_("Number of rows")
103 #define COLS_TEXT N_("Number of columns")
104 #define AR_TEXT N_("Keep aspect ratio when resizing")
105 #define KEEP_TEXT N_("Keep original size")
107 #define ORDER_TEXT N_("Order as a comma separated list of picture-id(s)")
109 #define DELAY_TEXT N_("Delay")
110 #define DELAY_LONGTEXT N_("Pictures coming from the picture video outputs " \
111 "will be delayed accordingly (in milliseconds). For high " \
112 "values you will need to raise file-caching and others.")
114 static int pi_pos_values[] = { 0, 1 };
115 static char * ppsz_pos_descriptions[] =
116 { N_("auto"), N_("fixed") };
118 static int pi_align_values[] = { 0, 1, 2, 4, 8, 5, 6, 9, 10 };
119 static char *ppsz_align_descriptions[] =
120 { N_("Center"), N_("Left"), N_("Right"), N_("Top"), N_("Bottom"),
121 N_("Top-Left"), N_("Top-Right"), N_("Bottom-Left"), N_("Bottom-Right") };
125 set_description( N_("Mosaic video sub filter") );
126 set_shortname( N_("Mosaic") );
127 set_capability( "sub filter", 0 );
128 set_callbacks( CreateFilter, DestroyFilter );
130 add_integer( "mosaic-alpha", 255, NULL, ALPHA_TEXT, ALPHA_LONGTEXT, VLC_FALSE );
131 add_integer( "mosaic-height", 100, NULL, HEIGHT_TEXT, HEIGHT_TEXT, VLC_FALSE );
132 add_integer( "mosaic-width", 100, NULL, WIDTH_TEXT, WIDTH_TEXT, VLC_FALSE );
133 add_integer( "mosaic-align", 5, NULL, ALIGN_TEXT, ALIGN_TEXT, VLC_TRUE);
134 change_integer_list( pi_align_values, ppsz_align_descriptions, 0 );
135 add_integer( "mosaic-xoffset", 0, NULL, XOFFSET_TEXT, XOFFSET_TEXT, VLC_TRUE );
136 add_integer( "mosaic-yoffset", 0, NULL, YOFFSET_TEXT, YOFFSET_TEXT, VLC_TRUE );
137 add_integer( "mosaic-vborder", 0, NULL, VBORDER_TEXT, VBORDER_TEXT, VLC_TRUE );
138 add_integer( "mosaic-hborder", 0, NULL, HBORDER_TEXT, HBORDER_TEXT, VLC_TRUE );
140 add_integer( "mosaic-position", 0, NULL, POS_TEXT, POS_LONGTEXT, VLC_FALSE );
141 change_integer_list( pi_pos_values, ppsz_pos_descriptions, 0 );
142 add_integer( "mosaic-rows", 2, NULL, ROWS_TEXT, ROWS_TEXT, VLC_FALSE );
143 add_integer( "mosaic-cols", 2, NULL, COLS_TEXT, COLS_TEXT, VLC_FALSE );
144 add_bool( "mosaic-keep-aspect-ratio", 0, NULL, AR_TEXT, AR_TEXT, VLC_FALSE );
145 add_bool( "mosaic-keep-picture", 0, NULL, KEEP_TEXT, KEEP_TEXT, VLC_FALSE );
146 add_string( "mosaic-order", "", NULL, ORDER_TEXT, ORDER_TEXT, VLC_FALSE );
148 add_integer( "mosaic-delay", 0, NULL, DELAY_TEXT, DELAY_LONGTEXT,
151 var_Create( p_module->p_libvlc, "mosaic-lock", VLC_VAR_MUTEX );
155 /*****************************************************************************
156 * CreateFiler: allocate mosaic video filter
157 *****************************************************************************/
158 static int CreateFilter( vlc_object_t *p_this )
160 filter_t *p_filter = (filter_t *)p_this;
162 libvlc_t *p_libvlc = p_filter->p_libvlc;
167 /* The mosaic thread is more important than the decoder threads */
168 vlc_thread_set_priority( p_this, VLC_THREAD_PRIORITY_OUTPUT );
170 /* Allocate structure */
171 p_sys = p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
174 msg_Err( p_filter, "out of memory" );
178 p_filter->pf_sub_filter = Filter;
181 vlc_mutex_init( p_filter, &p_sys->lock );
182 vlc_mutex_lock( &p_sys->lock );
184 var_Get( p_libvlc, "mosaic-lock", &val );
185 p_sys->p_lock = val.p_address;
187 #define GET_VAR( name, min, max ) \
188 p_sys->i_##name = __MIN( max, __MAX( min, \
189 var_CreateGetInteger( p_filter, "mosaic-" #name ) ) ); \
190 var_Destroy( p_filter, "mosaic-" #name ); \
191 var_Create( p_libvlc, "mosaic-" #name, VLC_VAR_INTEGER ); \
192 var_SetInteger( p_libvlc, "mosaic-" #name, p_sys->i_##name ); \
193 var_AddCallback( p_libvlc, "mosaic-" #name, MosaicCallback, p_sys );
195 GET_VAR( width, 0, INT_MAX );
196 GET_VAR( height, 0, INT_MAX );
197 GET_VAR( xoffset, 0, INT_MAX );
198 GET_VAR( yoffset, 0, INT_MAX );
200 p_sys->i_align = __MIN( 10, __MAX( 0, var_CreateGetInteger( p_filter, "mosaic-align" ) ) );
201 if( p_sys->i_align == 3 || p_sys->i_align == 7 )
203 var_Destroy( p_filter, "mosaic-align" );
204 var_Create( p_libvlc, "mosaic-align", VLC_VAR_INTEGER );
205 var_SetInteger( p_libvlc, "mosaic-align", p_sys->i_align );
206 var_AddCallback( p_libvlc, "mosaic-align", MosaicCallback, p_sys );
208 GET_VAR( vborder, 0, INT_MAX );
209 GET_VAR( hborder, 0, INT_MAX );
210 GET_VAR( rows, 1, INT_MAX );
211 GET_VAR( cols, 1, INT_MAX );
212 GET_VAR( alpha, 0, 255 );
213 GET_VAR( position, 0, 1 );
214 GET_VAR( delay, 100, INT_MAX );
215 p_sys->i_delay *= 1000;
217 p_sys->b_ar = var_CreateGetBool( p_filter, "mosaic-keep-aspect-ratio" );
218 var_Destroy( p_filter, "mosaic-keep-aspect-ratio" );
219 var_Create( p_libvlc, "mosaic-keep-aspect-ratio", VLC_VAR_INTEGER );
220 var_SetBool( p_libvlc, "mosaic-keep-aspect-ratio", p_sys->b_ar );
221 var_AddCallback( p_libvlc, "mosaic-keep-aspect-ratio", MosaicCallback,
224 p_sys->b_keep = var_CreateGetBool( p_filter, "mosaic-keep-picture" );
225 if ( !p_sys->b_keep )
227 p_sys->p_image = image_HandlerCreate( p_filter );
230 p_sys->i_order_length = 0;
231 p_sys->ppsz_order = NULL;
232 psz_order = var_CreateGetString( p_filter, "mosaic-order" );
234 if( psz_order[0] != 0 )
236 char *psz_end = NULL;
240 psz_end = strchr( psz_order, ',' );
242 p_sys->ppsz_order = realloc( p_sys->ppsz_order,
243 i_index * sizeof(char *) );
244 p_sys->ppsz_order[i_index - 1] = strndup( psz_order,
245 psz_end - psz_order );
246 psz_order = psz_end+1;
247 } while( NULL != psz_end );
248 p_sys->i_order_length = i_index;
251 vlc_mutex_unlock( &p_sys->lock );
256 /*****************************************************************************
257 * DestroyFilter: destroy mosaic video filter
258 *****************************************************************************/
259 static void DestroyFilter( vlc_object_t *p_this )
261 filter_t *p_filter = (filter_t*)p_this;
262 filter_sys_t *p_sys = p_filter->p_sys;
263 libvlc_t *p_libvlc = p_filter->p_libvlc;
266 vlc_mutex_lock( &p_sys->lock );
270 image_HandlerDelete( p_sys->p_image );
273 if( p_sys->i_order_length )
275 for( i_index = 0; i_index < p_sys->i_order_length; i_index++ )
277 free( p_sys->ppsz_order[i_index] );
279 free( p_sys->ppsz_order );
282 var_Destroy( p_libvlc, "mosaic-alpha" );
283 var_Destroy( p_libvlc, "mosaic-height" );
284 var_Destroy( p_libvlc, "mosaic-align" );
285 var_Destroy( p_libvlc, "mosaic-width" );
286 var_Destroy( p_libvlc, "mosaic-xoffset" );
287 var_Destroy( p_libvlc, "mosaic-yoffset" );
288 var_Destroy( p_libvlc, "mosaic-vborder" );
289 var_Destroy( p_libvlc, "mosaic-hborder" );
290 var_Destroy( p_libvlc, "mosaic-position" );
291 var_Destroy( p_libvlc, "mosaic-rows" );
292 var_Destroy( p_libvlc, "mosaic-cols" );
293 var_Destroy( p_libvlc, "mosaic-keep-aspect-ratio" );
295 if( p_sys->p_pic ) p_sys->p_pic->pf_release( p_sys->p_pic );
296 vlc_mutex_unlock( &p_sys->lock );
297 vlc_mutex_destroy( &p_sys->lock );
301 /*****************************************************************************
302 * MosaicReleasePicture : Hack to avoid picture duplication
303 *****************************************************************************/
304 static void MosaicReleasePicture( picture_t *p_picture )
306 picture_t *p_original_pic = (picture_t *)p_picture->p_sys;
308 p_original_pic->pf_release( p_original_pic );
311 /*****************************************************************************
313 *****************************************************************************/
314 static subpicture_t *Filter( filter_t *p_filter, mtime_t date )
316 filter_sys_t *p_sys = p_filter->p_sys;
321 int i_index, i_real_index, i_row, i_col;
322 int i_greatest_real_index_used = p_sys->i_order_length - 1;
324 subpicture_region_t *p_region;
325 subpicture_region_t *p_region_prev = NULL;
327 /* Allocate the subpicture internal data. */
328 p_spu = p_filter->pf_sub_buffer_new( p_filter );
334 /* Initialize subpicture */
335 p_spu->i_channel = 0;
336 p_spu->i_start = date;
338 p_spu->b_ephemer = VLC_TRUE;
339 p_spu->i_alpha = p_sys->i_alpha;
340 p_spu->i_flags = p_sys->i_align;
341 p_spu->b_absolute = VLC_FALSE;
343 vlc_mutex_lock( &p_sys->lock );
344 vlc_mutex_lock( p_sys->p_lock );
346 p_bridge = GetBridge( p_filter );
347 if ( p_bridge == NULL )
349 vlc_mutex_unlock( p_sys->p_lock );
350 vlc_mutex_unlock( &p_sys->lock );
354 if ( p_sys->i_position == 0 ) /* use automatic positioning */
356 int i_numpics = p_sys->i_order_length; /* keep slots and all */
357 for ( i_index = 0; i_index < p_bridge->i_es_num; i_index++ )
359 bridged_es_t *p_es = p_bridge->pp_es[i_index];
360 if ( !p_es->b_empty )
363 if( p_sys->i_order_length && p_es->psz_id != 0 )
365 /* We also want to leave slots for images given in
366 * mosaic-order that are not available in p_vout_picture */
368 for( i = 0; i < p_sys->i_order_length ; i++ )
370 if( !strcmp( p_sys->ppsz_order[i], p_es->psz_id ) )
380 p_sys->i_rows = ((int)ceil(sqrt( (float)i_numpics )));
381 p_sys->i_cols = ( i_numpics % p_sys->i_rows == 0 ?
382 i_numpics / p_sys->i_rows :
383 i_numpics / p_sys->i_rows + 1 );
388 for ( i_index = 0; i_index < p_bridge->i_es_num; i_index++ )
390 bridged_es_t *p_es = p_bridge->pp_es[i_index];
391 video_format_t fmt_in = {0}, fmt_out = {0};
392 picture_t *p_converted;
394 if ( p_es->b_empty || p_es->p_picture == NULL )
397 if ( p_es->p_picture->date + p_sys->i_delay < date )
399 if ( p_es->p_picture->p_next != NULL )
401 picture_t *p_next = p_es->p_picture->p_next;
402 p_es->p_picture->pf_release( p_es->p_picture );
403 p_es->p_picture = p_next;
405 else if ( p_es->p_picture->date + p_sys->i_delay + BLANK_DELAY <
409 p_es->p_picture->pf_release( p_es->p_picture );
410 p_es->p_picture = NULL;
411 p_es->pp_last = &p_es->p_picture;
415 msg_Dbg( p_filter, "too late picture for %s (" I64Fd ")",
417 date - p_es->p_picture->date - p_sys->i_delay );
420 if ( p_sys->i_order_length == 0 )
427 for ( i = 0; i <= p_sys->i_order_length; i++ )
429 if ( i == p_sys->i_order_length ) break;
430 if ( strcmp( p_es->psz_id, p_sys->ppsz_order[i] ) == 0 )
436 if ( i == p_sys->i_order_length )
437 i_real_index = ++i_greatest_real_index_used;
439 i_row = ( i_real_index / p_sys->i_cols ) % p_sys->i_rows;
440 i_col = i_real_index % p_sys->i_cols ;
442 if ( !p_sys->b_keep )
444 /* Convert the images */
445 fmt_in.i_chroma = p_es->p_picture->format.i_chroma;
446 fmt_in.i_height = p_es->p_picture->format.i_height;
447 fmt_in.i_width = p_es->p_picture->format.i_width;
449 fmt_out.i_chroma = VLC_FOURCC('Y','U','V','A');
450 fmt_out.i_width = fmt_in.i_width *
451 ( ( p_sys->i_width - ( p_sys->i_cols - 1 ) * p_sys->i_vborder )
452 / p_sys->i_cols ) / fmt_in.i_width;
453 fmt_out.i_height = fmt_in.i_height *
454 ( ( p_sys->i_height - ( p_sys->i_rows - 1 ) * p_sys->i_hborder )
455 / p_sys->i_rows ) / fmt_in.i_height;
456 if( p_sys->b_ar ) /* keep aspect ratio */
458 if( (float)fmt_out.i_width / (float)fmt_out.i_height
459 > (float)fmt_in.i_width / (float)fmt_in.i_height )
461 fmt_out.i_width = ( fmt_out.i_height * fmt_in.i_width )
466 fmt_out.i_height = ( fmt_out.i_width * fmt_in.i_height )
471 fmt_out.i_visible_width = fmt_out.i_width;
472 fmt_out.i_visible_height = fmt_out.i_height;
474 p_converted = image_Convert( p_sys->p_image, p_es->p_picture,
479 "image resizing and chroma conversion failed" );
485 p_converted = p_es->p_picture;
486 p_converted->i_refcount++;
487 fmt_in.i_width = fmt_out.i_width = p_converted->format.i_width;
488 fmt_in.i_height = fmt_out.i_height = p_converted->format.i_height;
489 fmt_in.i_chroma = fmt_out.i_chroma = p_converted->format.i_chroma;
490 fmt_out.i_visible_width = fmt_out.i_width;
491 fmt_out.i_visible_height = fmt_out.i_height;
494 p_region = p_spu->pf_make_region( VLC_OBJECT(p_filter), &fmt_out,
498 msg_Err( p_filter, "cannot allocate SPU region" );
499 p_filter->pf_sub_buffer_del( p_filter, p_spu );
500 vlc_mutex_unlock( &p_sys->lock );
501 vlc_mutex_unlock( p_sys->p_lock );
505 /* HACK ALERT : let's fix the pointers to avoid picture duplication.
506 * This is necessary because p_region->picture is not a pointer
507 * as it ought to be. */
514 /* Keep a pointer to the original picture (and its refcount...). */
515 p_region->picture.p_sys = (picture_sys_t *)p_converted;
516 p_region->picture.pf_release = MosaicReleasePicture;
519 if( p_sys->b_ar || p_sys->b_keep ) /* keep aspect ratio */
521 /* center the video in the dedicated rectangle */
522 p_region->i_x = p_sys->i_xoffset
523 + i_col * ( p_sys->i_width / p_sys->i_cols )
524 + ( i_col * p_sys->i_vborder ) / p_sys->i_cols
525 + ( ( ( p_sys->i_width
526 - ( p_sys->i_cols - 1 ) * p_sys->i_vborder )
527 / p_sys->i_cols ) - fmt_out.i_width ) / 2;
528 p_region->i_y = p_sys->i_yoffset
529 + i_row * ( p_sys->i_height / p_sys->i_rows )
530 + ( i_row * p_sys->i_hborder ) / p_sys->i_rows
531 + ( ( ( p_sys->i_height
532 - ( p_sys->i_rows - 1 ) * p_sys->i_hborder )
533 / p_sys->i_rows ) - fmt_out.i_height ) / 2;
537 /* we don't have to center the video since it takes the
538 whole rectangle area */
539 p_region->i_x = p_sys->i_xoffset
540 + i_col * ( p_sys->i_width / p_sys->i_cols )
541 + ( i_col * p_sys->i_vborder ) / p_sys->i_cols;
542 p_region->i_y = p_sys->i_yoffset
543 + i_row * ( p_sys->i_height / p_sys->i_rows )
544 + ( i_row * p_sys->i_hborder ) / p_sys->i_rows;
547 if( p_region_prev == NULL )
549 p_spu->p_region = p_region;
553 p_region_prev->p_next = p_region;
556 p_region_prev = p_region;
559 vlc_mutex_unlock( p_sys->p_lock );
560 vlc_mutex_unlock( &p_sys->lock );
565 /*****************************************************************************
566 * Callback to update params on the fly
567 *****************************************************************************/
568 static int MosaicCallback( vlc_object_t *p_this, char const *psz_var,
569 vlc_value_t oldval, vlc_value_t newval,
572 filter_sys_t *p_sys = (filter_sys_t *) p_data;
573 if( !strcmp( psz_var, "mosaic-alpha" ) )
575 vlc_mutex_lock( &p_sys->lock );
576 msg_Dbg( p_this, "Changing alpha from %d/255 to %d/255",
577 p_sys->i_alpha, newval.i_int);
578 p_sys->i_alpha = __MIN( __MAX( newval.i_int, 0 ), 255 );
579 vlc_mutex_unlock( &p_sys->lock );
581 else if( !strcmp( psz_var, "mosaic-height" ) )
583 vlc_mutex_lock( &p_sys->lock );
584 msg_Dbg( p_this, "Changing height from %dpx to %dpx",
585 p_sys->i_height, newval.i_int );
586 p_sys->i_height = __MAX( newval.i_int, 0 );
587 vlc_mutex_unlock( &p_sys->lock );
589 else if( !strcmp( psz_var, "mosaic-width" ) )
591 vlc_mutex_lock( &p_sys->lock );
592 msg_Dbg( p_this, "Changing width from %dpx to %dpx",
593 p_sys->i_width, newval.i_int );
594 p_sys->i_width = __MAX( newval.i_int, 0 );
595 vlc_mutex_unlock( &p_sys->lock );
597 else if( !strcmp( psz_var, "mosaic-xoffset" ) )
599 vlc_mutex_lock( &p_sys->lock );
600 msg_Dbg( p_this, "Changing x offset from %dpx to %dpx",
601 p_sys->i_xoffset, newval.i_int );
602 p_sys->i_xoffset = __MAX( newval.i_int, 0 );
603 vlc_mutex_unlock( &p_sys->lock );
605 else if( !strcmp( psz_var, "mosaic-yoffset" ) )
607 vlc_mutex_lock( &p_sys->lock );
608 msg_Dbg( p_this, "Changing y offset from %dpx to %dpx",
609 p_sys->i_yoffset, newval.i_int );
610 p_sys->i_yoffset = __MAX( newval.i_int, 0 );
611 vlc_mutex_unlock( &p_sys->lock );
613 else if( !strcmp( psz_var, "mosaic-align" ) )
615 int i_old = 0, i_new = 0;
616 vlc_mutex_lock( &p_sys->lock );
617 newval.i_int = __MIN( __MAX( newval.i_int, 0 ), 10 );
618 if( newval.i_int == 3 || newval.i_int == 7 )
620 while( pi_align_values[i_old] != p_sys->i_align ) i_old++;
621 while( pi_align_values[i_new] != newval.i_int ) i_new++;
622 msg_Dbg( p_this, "Changing alignment from %d (%s) to %d (%s)",
623 p_sys->i_align, ppsz_align_descriptions[i_old],
624 newval.i_int, ppsz_align_descriptions[i_new] );
625 p_sys->i_align = newval.i_int;
626 vlc_mutex_unlock( &p_sys->lock );
628 else if( !strcmp( psz_var, "mosaic-vborder" ) )
630 vlc_mutex_lock( &p_sys->lock );
631 msg_Dbg( p_this, "Changing vertical border from %dpx to %dpx",
632 p_sys->i_vborder, newval.i_int );
633 p_sys->i_vborder = __MAX( newval.i_int, 0 );
634 vlc_mutex_unlock( &p_sys->lock );
636 else if( !strcmp( psz_var, "mosaic-hborder" ) )
638 vlc_mutex_lock( &p_sys->lock );
639 msg_Dbg( p_this, "Changing horizontal border from %dpx to %dpx",
640 p_sys->i_vborder, newval.i_int );
641 p_sys->i_hborder = __MAX( newval.i_int, 0 );
642 vlc_mutex_unlock( &p_sys->lock );
644 else if( !strcmp( psz_var, "mosaic-position" ) )
646 if( newval.i_int > 1 || newval.i_int < 0 )
648 msg_Err( p_this, "Position is either 0 (auto) or 1 (fixed)" );
652 vlc_mutex_lock( &p_sys->lock );
653 msg_Dbg( p_this, "Changing position method from %d (%s) to %d (%s)",
654 p_sys->i_position, ppsz_pos_descriptions[p_sys->i_position],
655 newval.i_int, ppsz_pos_descriptions[newval.i_int]);
656 p_sys->i_position = newval.i_int;
657 vlc_mutex_unlock( &p_sys->lock );
660 else if( !strcmp( psz_var, "mosaic-rows" ) )
662 vlc_mutex_lock( &p_sys->lock );
663 msg_Dbg( p_this, "Changing number of rows from %d to %d",
664 p_sys->i_rows, newval.i_int );
665 p_sys->i_rows = __MAX( newval.i_int, 1 );
666 vlc_mutex_unlock( &p_sys->lock );
668 else if( !strcmp( psz_var, "mosaic-cols" ) )
670 vlc_mutex_lock( &p_sys->lock );
671 msg_Dbg( p_this, "Changing number of columns from %d to %d",
672 p_sys->i_cols, newval.i_int );
673 p_sys->i_cols = __MAX( newval.i_int, 1 );
674 vlc_mutex_unlock( &p_sys->lock );
676 else if( !strcmp( psz_var, "mosaic-keep-aspect-ratio" ) )
678 vlc_mutex_lock( &p_sys->lock );
681 msg_Dbg( p_this, "Keep aspect ratio" );
686 msg_Dbg( p_this, "Don't keep aspect ratio" );
689 vlc_mutex_unlock( &p_sys->lock );